Analysis

  • max time kernel
    60s
  • max time network
    60s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250410-en
  • resource tags

    arch:x64arch:x86image:win11-20250410-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    20/04/2025, 19:21

General

  • Target

    file3.exe

  • Size

    1.0MB

  • MD5

    784eb8175f6a13be07633f2deb13a7ef

  • SHA1

    a369bf9b6e3dc4af534b0980d88af246ef2a980b

  • SHA256

    751b84526549ce5185de83cc3e7baf3e9019ba2bb51160d0a7890b82b2807d5f

  • SHA512

    7238874a886682ba108e5bed8e20350038dc24c630717ac52b1e38322fe124f4f9b1c40e6ff50fb94df6108aa371d7a0cf4c76d9e77a05700cde600e989dbd5c

  • SSDEEP

    24576:zm+KZ1xuVVjfFoynPaVBUR8f+kN10EB4gGApfkxI:zm+aQDgok30JjAL

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

jvjv2044duck33.duckdns.org:8808

Mutex

0fC8zJGwBBNm

Attributes
  • delay

    3

  • install

    true

  • install_file

    csrss.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

darkcomet

Botnet

Guest16

C2

jvjv2044duck33.duckdns.org:1604

Mutex

DC_MUTEX-VSPAW1U

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    WsSXJDBChA4p

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

rc4.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Asyncrat family
  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

  • Darkcomet family
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • NanoCore

    NanoCore is a remote access tool (RAT) with a variety of capabilities.

  • Nanocore family
  • Async RAT payload 1 IoCs
  • Disables Task Manager via registry modification
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Executes dropped EXE 13 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 22 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Delays execution with timeout.exe 1 IoCs
  • Modifies registry class 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 63 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file3.exe
    "C:\Users\Admin\AppData\Local\Temp\file3.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3232
    • C:\Users\Admin\AppData\Roaming\ULTIME MULTIHACK REBORN.EXE
      "C:\Users\Admin\AppData\Roaming\ULTIME MULTIHACK REBORN.EXE"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:3440
    • C:\Users\Admin\AppData\Roaming\VLC MEDIA PLAYE.EXE
      "C:\Users\Admin\AppData\Roaming\VLC MEDIA PLAYE.EXE"
      2⤵
      • Modifies WinLogon for persistence
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:5608
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Roaming\VLC MEDIA PLAYE.EXE" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4756
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Roaming\VLC MEDIA PLAYE.EXE" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:6080
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Roaming" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4736
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Roaming" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:5996
      • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:5076
    • C:\Users\Admin\AppData\Roaming\WINDOWS DEFENDER.EXE
      "C:\Users\Admin\AppData\Roaming\WINDOWS DEFENDER.EXE"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1672
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "csrss" /tr '"C:\Users\Admin\AppData\Roaming\csrss.exe"' & exit
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4276
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "csrss" /tr '"C:\Users\Admin\AppData\Roaming\csrss.exe"'
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:2116
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8F30.tmp.bat""
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2540
        • C:\Windows\SysWOW64\timeout.exe
          timeout 3
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:5972
        • C:\Users\Admin\AppData\Roaming\csrss.exe
          "C:\Users\Admin\AppData\Roaming\csrss.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:3344
    • C:\Users\Admin\AppData\Roaming\WINDOWS SECURITY NANO.EXE
      "C:\Users\Admin\AppData\Roaming\WINDOWS SECURITY NANO.EXE"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:904
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2704
    • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:4944
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4912
    • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:5116
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Program Files (x86)\PCI Subsystem\pciss.exe
    1⤵
      PID:5052
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:4932
      • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:5000
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:3404
      • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2708
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:3088
      • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2020
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:2024
      • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1948
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:2136
      • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:820

    Network

    MITRE ATT&CK Enterprise v16

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp8F30.tmp.bat

      Filesize

      149B

      MD5

      7401fd2f6a954ee00deb5790f29305f2

      SHA1

      3d6766000ec2f7cc4d44e8ce5c0e5b9152303bbf

      SHA256

      5d521bb76a5313ec745f8733d1668a040f0bfea442e70c8d74479d9d1fe27d62

      SHA512

      2abb39a6a96de18f12f6146406e550ceb1bd90364d918848207023cbf632e05706a3f7a453bb049601519c5d329b3c10e4613c06eef6bcf6c8b447b00c048916

    • C:\Users\Admin\AppData\Roaming\ULTIME MULTIHACK REBORN.EXE

      Filesize

      86KB

      MD5

      0739a4b039910c9ecc48661e25279e6e

      SHA1

      02bf3b0265850bc13e85ac9bb421b88b6babbcaf

      SHA256

      9df65940d3f2230b276e9ee989f15a94855e07cf2aa04210353f7a9e9a62db4a

      SHA512

      e8a8876f4cfc2657e2b355b288fb8386e40131aeacc18aba1036ea5e60cf9a571f8da4ead987751db16fba5054d50b3dac9c399e5dff38fc64bf22c4fb3cb92f

    • C:\Users\Admin\AppData\Roaming\VLC MEDIA PLAYE.EXE

      Filesize

      658KB

      MD5

      de8155dd13365377edb85032384b10cb

      SHA1

      cb23083134afbf04d2fda5981cf4ac05b65afe86

      SHA256

      ad4b6815581ce764ee631e5d2cc588fe0b5bb607de8499d21316544940db224b

      SHA512

      8cbcca98eef2417932d1bb6acb59c72ca1944b6480551dee372ae2bc50a3f66bfc3cfd834f932b36e63df9b930febec9f1e34a0d54b162e126e91c55a2d95d6a

    • C:\Users\Admin\AppData\Roaming\WINDOWS DEFENDER.EXE

      Filesize

      47KB

      MD5

      96da127f30d555f809b5a781eeadb5d4

      SHA1

      6742daf92406b52d5b98fcf3c8b96aca2f691404

      SHA256

      f2e3e68a10f9f07b031e2fd3d7d73553ee4639a5e1c2a0775ac0a2ddbeff5e53

      SHA512

      2c7f2d0bfb65e532f1c1068a93f92c2cd17682de70d8ee84cab47d3b3e80f87d97d16e0d41dee027f3381e5abe9d19f8b2604da7769d36243695be1d79b3be52

    • C:\Users\Admin\AppData\Roaming\WINDOWS SECURITY NANO.EXE

      Filesize

      209KB

      MD5

      172214b69dfbf053c83ff8e6b70842bc

      SHA1

      02e321757925f21b18c96d2e23d6e9a755df59ab

      SHA256

      da01598ba05a9467fa7cf76d9d212df75886eeeea30a633654dcdf29d8be90d9

      SHA512

      6b02e7dffd64a8cc7b83e7dcbfbd8d4dfb99f7cc13d5056ffb00efb51f7cf0431bb270b8afa394dbeb4e7b3558261c0ea6bd3a542bd82afd9fbc9c5227f83a42

    • memory/820-88-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/904-73-0x0000000001270000-0x0000000001280000-memory.dmp

      Filesize

      64KB

    • memory/904-46-0x0000000001270000-0x0000000001280000-memory.dmp

      Filesize

      64KB

    • memory/1672-41-0x0000000073D3E000-0x0000000073D3F000-memory.dmp

      Filesize

      4KB

    • memory/1672-44-0x00000000009C0000-0x00000000009D2000-memory.dmp

      Filesize

      72KB

    • memory/1948-85-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/2020-82-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/2708-78-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3440-53-0x0000000004F10000-0x0000000004FA2000-memory.dmp

      Filesize

      584KB

    • memory/3440-49-0x0000000004DD0000-0x0000000004E6C000-memory.dmp

      Filesize

      624KB

    • memory/3440-45-0x0000000073D30000-0x00000000744E1000-memory.dmp

      Filesize

      7.7MB

    • memory/3440-48-0x0000000000470000-0x000000000048C000-memory.dmp

      Filesize

      112KB

    • memory/3440-56-0x00000000050A0000-0x00000000050F6000-memory.dmp

      Filesize

      344KB

    • memory/3440-55-0x0000000004E90000-0x0000000004E9A000-memory.dmp

      Filesize

      40KB

    • memory/3440-72-0x0000000073D30000-0x00000000744E1000-memory.dmp

      Filesize

      7.7MB

    • memory/3440-50-0x0000000005420000-0x00000000059C6000-memory.dmp

      Filesize

      5.6MB

    • memory/4944-76-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/5000-75-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/5076-62-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/5116-60-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/5608-63-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/5608-47-0x0000000002470000-0x0000000002471000-memory.dmp

      Filesize

      4KB